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## math_crasher Group Title Are the two triangles similar? If so, how do you know? Figure is below one year ago one year ago

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1. math_crasher Group Title

2. henpen Group Title

If all three sides are in the same ratio with the other triangle's sides, then it is similar.

3. henpen Group Title

i.e.:$\frac{12}{8}=\frac{7.5}{5}$

4. math_crasher Group Title

What theorem or postulate you think it would be?

5. henpen Group Title

The one that says 'If all of triangle A's sides are in the same proportion to each of the matching sides of triangle B, A and B are similar' You could probably derive that from more fundamental principals.

6. math_crasher Group Title

Did you see the figure above?

7. henpen Group Title

Yes. 0M=1.5CA, ON=1.5CB, and MN=1.5AB

8. math_crasher Group Title

Ah i see so if the triangle has to be proportionate to the other one they have to be equal on all sides?

9. henpen Group Title

Yes, as therefore all the angles are forced into being the same.

10. math_crasher Group Title

Ah never mind I get it

11. math_crasher Group Title

So would you say it is SSS since its measured by its sides?

12. henpen Group Title

Yes.

13. math_crasher Group Title

Thank you so much